By ESPNSTAR.com staff
After a fairly lacklustre first half, the game sparked into life five minutes after the break when Thamil Arasu curled home a delightful effort from the edge of the area give Ong Kim Swee's charges the lead.
However, Tampines equalised in the 65th minute when Mustafic Fahrudin fired a firm penalty past Izham Tarmizi, after Jamil Ali had been felled in the box by Syazwan Tajudin.
The Stags then hit the front foot when Ismadi Mukhtar scored a peach of a goal; weaving his way past a challenge from Fadhli Shas before unleashing a screamer into the back of the net.
It was then Harimau's turn to level the scores in the 76th minute when Syahrul Azwari nodded home a good cross from Nazirul, but their joy was shortlived as Jamil went straight up the other end and netted a dramatic winner for the visitors.
In Sunday's other game, Frederic Mendy scored a second-half double to help Home United beat Courts Young Lions 3-1, after Firdaus Idros had cancelled out Jonathan Toto's opener for Robin Chitrakar's side.
Friday's action saw Albirex Niigata edge Gombak United 1-0 in a entertaining encounter thanks to a fortuitous goal from Toshikazu Soya, while Serge Souchon proved to be the match-winner in Tanjong Pagar United's 1-0 triumph over Woodlands Wellington.
On Thursday, league leaders DPMM FC cruised to a 3-1 win over Balestier Khalsa, SAFFC were held to a 2-2 draw by struggling Geylang United, while Young Lions beat Hougang United 2-0 in their first match of the round.
Watch: Highlights - Harimau Muda 2-3 Tampines... More Videos
Sunday's Great Eastern-YEO's S.League Results
Harimau Muda 2-3 Tampines Rovers
Friday's Great Eastern-YEO's S.League Results
Thursday's Great Eastern-YEO's S.League Results